Spindle attachment for lathes or other tools.



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SPINDLE ATTACHMENT FOB LAIHES UR VDTI-IER TOULS.

' (Applicationled Feb. 24, 1902.)

{NO Model.)

A fvwm/5985s @y MM AfQR/VEYS UNITED, STATES PATENT ,.Orricn.

ANDREW C. WITZEL, OF NEW YORK, N. Y.

SPINDLE ATTACHMENT FOR LATHES OR OTHER TOOLS.

SPECIFICATION forming part of Letters Patent No. 704,726, dated July 15, 1902. A

Application led February 24, 1902. Serial No. 95,163. (No model.)

To Z whom, t may concern.:

Be it known that I, ANDREW C. WITZEL, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and usefullmprovements in Spindle Attachments for Lathes or other Tools, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved longitudinallyv movable spindle attachment for use in connection with the spindle of a spinning-lathe and in connection with other rapidly-revolving spindles, a further objectv being to provide an iinproved work-holder adapted to be mounted on the spindle of a spinning-lathe and to au,v

tomatically move longitudinally thereof, so as to hold the work or sheet of materialy to be spun; and with these and other objects in view the invention consists of a device of the class specified constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompa` nying drawings form apart, in which the separate parts of my improvement are designated by the same reference characters in each of the views, and in which- Figure l is a perspective View of a spinning-lathe provided with myimprovement: Fig. 2, a longitudinal section thereof; Fig. 3, a transverse section on the line 3 3 of Fig. 2, and Fig. e a similar section on the lne4i 4t of Fig. 2.

In the drawings forming part of this speciiication Iliave shown at of, the support or headstock of aspinning-lathe, in which is mounted a bearing d2, through which is passed a shaft b, provid-ed at its outer endwith a pulley c, by means of which in practice the shaft is driven. n

The endof the'shaft b opposite the pulley c is screw-threaded, and in practice the form CZ is screwed onto said shaft, and passing through this form and screwed into the shaft h is a lathe-spindle c, the outer end of which is screw-threaded, as shown at c2. I have also shown at e3 a sheet of brass to be spun over the forni d, and in practice I provide a tool or instrument of the class herein specified which constitutes the subject of this invention and which consists of a central corepiecef, provided at one end with a block f2, and the spindle' e passes loosely through the core-piecefand the block f2 and is free to turn therein. The core-piecefof my attachment is provided at the opposite sides with a longitudinal groove f3, and pivoted therein near their outer ends, as shown at f4, are pawl-levers g, the outer ends of which are each provided with a segmental nut g2, these segmental nuts being half-nuts in form and constituting in the operation of the device as hereinafter described a complete nut.

VAThe outer ends of the segmental nuts g2 are beveled, as clearly shown in Fig. 2, and the inner ends of the pawl-levers g are correspondingly beveled, as shown at g3, and said core-piece is also preferably grooved longitudinally at four dierent points, as shown at g5 in Fig. 3, the object of this construction being simply to reduce the weight of the device.

Mounted on the core-piece f is a sleeve h, which is provided near its outer end and in the Opposite sides Vthereof with set-screws h2, and similar set-screws h3 are mounted inthe opposite sides thereof near the inner end, and the movement'of the sleeve h longitudinally of the core-piece f operates the pawl-levers g and causes the nuts g2 to engage the thread of the spindle e` at e2 when said sleeve is moved in one direction and also causes said. nuts to disengage said spindle or the thread thereof lwhen Vsaid sleeve is moved in the oppositedirec'tion.

The sleeve his provided with enlarged collars or rims i and i?, through which the setscrews h2 and h3 are passed, and said sleeve may be moved longitudinally of the core-piece fby any suitable instrument or maybe moved by hand; but in practice when the device is in operation it is advisable to move said sleeve by means of a. tool or instrument.

The operation will be readily understood from the foregoing description when taken in connection with the accompanyingdrawings and the following statement thereof. It will be understood that the sheet e3 of metal to be spun over the form d is placed on the spindle e in the usual manner, and the block f2, which is secured in the end of my improved attach- IOO ment, presses on said sheet and holds it in position and the sheet es is spun over the form d in the usual manner. By movingthe sleeve h outwardly the screws h3 will strike the inner ends of the paWl-levers g and at the same time the screws h3 will slide over the nuts g2 and the said'nuts move outwardly by reason of the fact that the inner ends of said levers are forced inwardly, and the entire attachment may be moved longitudinally of the spindle, as will be readily understood, and When said sleeve is moved inwardlythis operation will be reversed and the nuts g2 will be forced int-o engagement with the thread c2 on the spindle e. This operation may be performed while the spindle is revolved, and the connection of the attachment with the spindle or its disconnection or removal therefrom may thus be accomplished Without stopping the spindle, and the substitution of one sheet es for another may thus be quickly and easily accomplished Whenever desired. It is also necessary to provide means to limit the movement of the sleeve h on the core-piece f, and in The construction herein shown and described I form in one side of the core-piece f a short longitudinal groove j, and passed through said sleeve is a screwf, the inner end of which fits in said groove, and the length of said groove regulates the movement of the sleeve h longitudinally of the core-piece f. It will also be understood that the revolution of the spindle forces the attachment against the sheet e3 and holds it securely in this position, and this attachment may be applied to any kind of a revolving spindle having a screw-thread at the outer end thereof.

Having thus fully described my invention,

'WhatI claim as new, and desire to secure by Letters Patent, is-

l. An attachment for a revolving spindle provided with a screw-thread, said attachment consisting o f a centrallongitudinal corepiece, a sleeve movable longitudinally thereon and levers connected with said core-piece and operated by said sleeve and provided With segmental nuts adapted to engage the thread of said spindle, substantially as shown and described.

2. An attachment for a rotatable spindle provided with a screw-thread at its outer end, comprising a central core-piece through which the spindle passes and provided with longitudinal grooves in the opposite sides thereof, paWl-levers pivoted in said grooves and provided at their outer ends with segmental nuts adapted to engage the thread of the spindle and a sleeve mounted on said core-piece and longitudinally movable thereon and adapted to engage said levers, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 20th day of February, 1902.

ANDREW C. VITZEL.

Witnesses:

F. A. STEWART, F. F. TELLER. 

